At the risk of being flamed:

On my Vista Desktop running Outlook 2007, with a 7290, I get the same error with DM 4.3 and 4.2.2:

All syncs OK except the contacts. As soon as the contacts start to sync I get an error:
"Unable to read application data." It start with the first one. There is no entry in the log file.

2 questions: Is there a way to fix this? Or find what contact causes this?
Can I somehow empty all the contacts on my BB?